Re: Bench testing solenoids...the right way...advice please

Posted by BDeB On 2023/4/17 13:54:50

Speedo pinion to use will depend on your rear axle ratio and tire size.

For 1946 models with overdrive, the 6 cylinder cars came with a 4:55 to 1 rear axle and the small 8 cylinder cars came with 4:3 to 1. Standard tires were 15 inch and export may have been 16 inch.

Best match speedo pinion will be the 412443 which has 18 teeth and was used with axle ratios of 4:3 and 4;36 for 15 inch tires

412442 has 17 teeth and used for axle ratios of 3:9 and 4:1

412444 has 19 teeth and was used for taxi and commercial chassis cars with 4:36 axle ratio and 16 inch tires. This one will be scarce.